diff --git a/indra/newview/skins/ansastorm/colors.xml b/indra/newview/skins/ansastorm/colors.xml
index d2d49145cd..e86f7a3844 100644
--- a/indra/newview/skins/ansastorm/colors.xml
+++ b/indra/newview/skins/ansastorm/colors.xml
@@ -1297,4 +1297,10 @@
   <color
       name="FSChatHistoryBackground"
       reference="Transparent" />
+  <color
+      name="ChatHeaderAlphaBackground"
+      reference="Black_25" />
+  <color
+      name="ChatHeaderOpaqueBackground"
+      reference="Black_25" />
 </colors>
diff --git a/indra/newview/skins/ansastorm/themes/classic_brown/colors.xml b/indra/newview/skins/ansastorm/themes/classic_brown/colors.xml
index ff1dac620f..d8c3a5c100 100644
--- a/indra/newview/skins/ansastorm/themes/classic_brown/colors.xml
+++ b/indra/newview/skins/ansastorm/themes/classic_brown/colors.xml
@@ -1297,4 +1297,10 @@
   <color
       name="FSChatHistoryBackground"
       reference="Transparent" />
+  <color
+      name="ChatHeaderAlphaBackground"
+      reference="Black_25" />
+  <color
+      name="ChatHeaderOpaqueBackground"
+      reference="Black_25" />
 </colors>
diff --git a/indra/newview/skins/default/colors.xml b/indra/newview/skins/default/colors.xml
index c7888f60e7..919b161864 100755
--- a/indra/newview/skins/default/colors.xml
+++ b/indra/newview/skins/default/colors.xml
@@ -1252,4 +1252,10 @@
   <color
       name="FSChatHistoryBackground"
       reference="Transparent" />
+  <color
+      name="ChatHeaderAlphaBackground"
+      reference="DkGray_66" />
+  <color
+      name="ChatHeaderOpaqueBackground"
+      reference="Black" />
 </colors>
diff --git a/indra/newview/skins/default/xui/en/panel_chat_header.xml b/indra/newview/skins/default/xui/en/panel_chat_header.xml
index 8b04adbe87..e24ae8c2d1 100755
--- a/indra/newview/skins/default/xui/en/panel_chat_header.xml
+++ b/indra/newview/skins/default/xui/en/panel_chat_header.xml
@@ -2,8 +2,8 @@
 <panel
 	 background_visible="true"
      bevel_style="in"
-     bg_opaque_color="Black" 
-     bg_alpha_color="DkGray_66"
+     bg_opaque_color="ChatHeaderOpaqueBackground" 
+     bg_alpha_color="ChatHeaderAlphaBackground"
      follows="top|left|right"
      height="24"
      label="im_header"
diff --git a/indra/newview/skins/firestorm/themes/highcontrast/colors.xml b/indra/newview/skins/firestorm/themes/highcontrast/colors.xml
index 7f84961928..9101493505 100644
--- a/indra/newview/skins/firestorm/themes/highcontrast/colors.xml
+++ b/indra/newview/skins/firestorm/themes/highcontrast/colors.xml
@@ -885,4 +885,13 @@
   <color
       name="Phototools_Header"
       reference="EmphasisColor" />
+  <color
+      name="FSChatHistoryBackground"
+      reference="Transparent" />
+  <color
+      name="ChatHeaderAlphaBackground"
+      reference="Black_25" />
+  <color
+      name="ChatHeaderOpaqueBackground"
+      reference="Black_25" />
 </colors>